Salsabilla, Nena, and Hermien Laksmiwati. “Self Efficacy Pada Section Leader UKM Paduan Suara”. Character Jurnal Penelitian Psikologi 10, no. 2 (July 12, 2023): 878-897. Accessed July 3, 2024. https://ejournal.unesa.ac.id/index.php/character/article/view/54591.